From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail143.messagelabs.com (mail143.messagelabs.com [216.82.254.35]) by kanga.kvack.org (Postfix) with ESMTP id 907166B009C for ; Mon, 11 Oct 2010 22:11:32 -0400 (EDT) Received: from hpaq12.eem.corp.google.com (hpaq12.eem.corp.google.com [172.25.149.12]) by smtp-out.google.com with ESMTP id o9C2BUSA008105 for ; Mon, 11 Oct 2010 19:11:30 -0700 Received: from pzk37 (pzk37.prod.google.com [10.243.19.165]) by hpaq12.eem.corp.google.com with ESMTP id o9C2BSVt028160 for ; Mon, 11 Oct 2010 19:11:29 -0700 Received: by pzk37 with SMTP id 37so45166pzk.9 for ; Mon, 11 Oct 2010 19:11:28 -0700 (PDT) Date: Mon, 11 Oct 2010 19:11:25 -0700 (PDT) From: David Rientjes Subject: Re: [resend][PATCH] mm: increase RECLAIM_DISTANCE to 30 In-Reply-To: Message-ID: References: <20101008104852.803E.A69D9226@jp.fujitsu.com> <20101008090427.GB5327@balbir.in.ibm.com> <20101008165930.GH5327@balbir.in.ibm.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org To: Christoph Lameter Cc: Balbir Singh , KOSAKI Motohiro , Mel Gorman , Rob Mueller , linux-kernel@vger.kernel.org, Bron Gondwana , linux-mm List-ID: On Fri, 8 Oct 2010, Christoph Lameter wrote: > It implies that zone reclaim is going to be automatically enabled if the > maximum latency to the memory farthest away is 3 times or more that of a > local memory access. > It doesn't determine what the maximum latency to that memory is, it relies on whatever was defined in the SLIT; the only semantics of that distance comes from the ACPI spec that states those distances are relative to the local distance of 10. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org